Etymology
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spherical (adj.)

1520s, from sphere + -ical. Related: Spherically. A spherical number (1640s) is one whose powers always terminate in the same digit as the number itself (5, 6, and 10 are the only ones).

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Definitions of spherical

spherical (adj.)
of or relating to spheres or resembling a sphere;
spherical geometry
spherical (adj.)
having the shape of a sphere or ball; "little globular houses like mud-wasp nests"- Zane Grey;
a spherical object
Synonyms: ball-shaped / global / globose / globular / orbicular / spheric
From wordnet.princeton.edu